<template>
  <div>
    <!-- 头部 -->
    <header class="header">
      <!-- 头部的第一行 -->
      <div class="top">
        <div class="container">
          <div class="loginList">
            <p>尚品汇欢迎您！</p>
            <!-- 没有用户名：未登录 -->
            <p v-if="!userInfo.name">
              <span>请</span>
              <!-- 声明式导航：router-link务必要有to属性 -->
              <router-link to="/login">登录</router-link>
              <router-link class="register" to="/register"
                >免费注册</router-link
              >
            </p>
            <!-- 登录了 -->
            <p v-else>
              <a>{{ userInfo.name }}</a>
              <a href="javascript:;" class="register" @click="logout">退出登录</a>
            </p>
          </div>
          <div class="typeList">
            <router-link to="/center">我的订单</router-link>
            <router-link to="/shopcart">我的购物车</router-link>
            <a href="javascript:;">我的尚品汇</a>
            <a href="javascript:;">尚品汇会员</a>
            <a href="javascript:;">企业采购</a>
            <a href="javascript:;">关注尚品汇</a>
            <a href="javascript:;">合作招商</a>
            <a href="javascript:;">商家后台</a>
          </div>
        </div>
      </div>
      <!--头部第二行 搜索区域-->
      <div class="bottom">
        <h1 class="logoArea">
          <router-link class="logo" title="尚品汇" to="/home">
            <img src="./images/logo.png" alt="" />
          </router-link>
        </h1>
        <div class="searchArea">
          <form action="###" class="searchForm">
            <input
              v-model="keyword"
              type="text"
              id="autocomplete"
              class="input-error input-xxlarge"
              @keyup.enter="goSearch(keyword)"
            />
            <button
              class="sui-btn btn-xlarge btn-danger"
              type="button"
              @click="goSearch(keyword)"
            >
              搜索
            </button>
          </form>
        </div>
      </div>
    </header>
  </div>
</template>

<script>
import { mapState } from 'vuex'
export default {
  name: '',
  data() {
    return {
      // input绑定搜索文字
      keyword: ''
    }
  },
  mounted() {
    this.$bus.$on('clear', () => {
      this.keyword = ''
    })
  },
  methods: {
    // 搜索按钮回调函数
    goSearch(value) {
      // 路由传参
      // 1. 字符串形式
      // this.$router.push('/search/' + value + "?k="+value.toUpperCase())
      // 2. 模板字符串
      // this.$router.push(`/search/${value}?k=${value.toUpperCase()}`)
      // 3. 对象传参（c常用）
      if (this.$route.query) {
        let location = {
          name: 'search',
          params: { keyword: value }
        }
        location.query = this.$route.query
        this.$router.push(location)
      }
    },
    // 退出登录
    async logout() {
      //退出登录需要做的事情
      //1:需要发请求，通知服务器退出登录【清除一些数据：token】
      //2:清除项目当中的数据【userInfo、token】
      try {
        //如果退出成功
        await this.$store.dispatch('user/userLogout')
        //回到首页
        this.$router.push('/home')
      } catch (error) {}
    }
  },
  computed: {
    ...mapState('user', ['userInfo'])
  },
  beforeDestroy() {
    this.$bus.$off('clear')
  }
}
</script>

<style scoped lang="less">
.header {
  & > .top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          & + a {
            border-left: 1px solid #b3aeae;
          }
        }
      }
    }
  }

  & > .bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>
